Lateral-motion device for railway-trucks.



H. H. VAUGHAN.

LATERAL MOTION DEVICE FOR RAILWAY TRUCKS. APPLICATION FILED SEPT. 22,1913.

1,099,890, Patented June 9,1914.

2 SHEETS-SHEET l.

lilvenlar,

6g ldzrn gsl mam WWW H. H. VAUGHAN. LATERAL MOTION DEVICE FOR RAILWAY TRUCKS.

APPLIOATION FILED SEPT. 22,1913. v

Patented June 9, 1914.

2 $HEETS-SHEET 2.

e- S I v I j Jm 71 3??? 4.

v40. f w nu 17/ g nnxmrn. VAUGHAN, or nomnnnn, oonnnc, oANAnA.

LATERAL-MOTION nnvron m RAILW Y-muons.

l i Specification of Letters Patent. Patented J 11119 9, 1914 Application filed September'22, 1913. Serial No. 791,061.

To all whom it may concern:

7 Be it known that I, HENRY H. VAUGHAN, a citizen of the United States, residing at Montreal, in thecounty of Hochelaga and Province of Quebec, Canada, have invented certain new and useful Improvements in Lateral Motion Devices for Railway- Trucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilledinthe art to which it appertains'to make and use the same.

My invention has for its object to provide a s'imple'and efiicient lateral motion de-' vice for railway trucks, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims; i

f The well known function of latelal .mo-

@ tiondevices for railway trucks, is to per- Lmit lateral movements of the body'in re- 'spect ,tothe' wheels, and to thereby reduce the frictional contact between thev wheel flanges and the rails. When these lateral motion devices. are incorporated in car trucks, they are sometimes applied between the truck side frannes and a truck bolster, said truclr bolster being capable of endwise-movement transversely of the truck.

ln'somein'stances, they are placed between the journal boxes and truck side frames; and in still other instances, they are interposed between the bolsters of the car body and the truck side frames the truck bolsters being dispensable. In the application of such lateral motion devices, to tender trucks," for example, they are 'advisably interposed betweenfthe journal boxes and the equalizingbars of the side frames. Experienceihas shown) that a common fault in theselateral motion devices is found in the fact that they have too little normal stability, or, in other words, offer too slight resistance against lateral movements when in their central or medial positions, so thatthe car or truck body'will be given incessant .lateral swaying movement not at all denary running conditions on a straight or nearly straight track, they wilil remain dormant or solid, but under-considerable lateral .stress, will slip oryield to prevent excessive thrust of the wheel flanges against the rails. This is accomplished in the present instance, by the use of opposed oblique frictional engaging members therein designated as wedge plates. In the accompanying drawings which illustrate the invention, like characters ind cate like parts throughout the severalvlews.

-Referring to the drawings: Figure' 1 is a fragmentary view in side elevation, with some parts broken away and with some parts sectioned, showing one of my improved lateral motion device's applied to a tender truck; Fig. 2 is a vertical sectiontaken' on the hue m w on Fig. 1; Fig. 3 is a plan View of certain of the parts shown in Fig. 1, I

\ plates of the lateral motion'devices; Fig.

5 is a View chiefly in side elevation, but w1th some parts sectioned and with some parts broken away, showing my improved lateral motion device a plied between the side frame and body bo ster' of a car; and Flg. 6 1s a transverse vertical section taken approximately on the line at w on Fig. 51

Referring. first to the construction illustrated in Figs. 1- to 4, inclusive, which illustrate the improved lateral motion device applied to a tender truck, the numeral Ifindicates a ournal box, the numeral 2 the journal box pedestals, the numeral 3 the top bar of the truck side frame, and the numeral 4,

' the equalizeror equalizing bars. TheQjou-rnal box 1 is mounted for vertical movements but allowed a restricted amount of lateral movement in respect tothe pedestals 2. The

top. bar 3 is, as shown, rigidly secured to the upper ends ofthe pedestals 2, by nutequipped bolts 5. t The equalizing bars 4 support the truck'springs in the usual or any suitable way, not shown. Usually, they are -arranged in pairs and seated at their ends on top of the journal boxes. In the present instance, however, my improved lateral motion devices are interposed between the journal boxes and the ends of the said equalizer bars, and each. such lateral motion' device comprlses a lower-wedge plate 6, and an upper'wedge plate 7, the former of which, as shown; are anchored on the tops of the journal, boxes '1, byjdowel pins 8, and the 60 numeral 14 indicates the truck side frames,

latter of which is provided with top channels 9 in which the ends of the equalizing bars -4 are seated and held against lateral movement with respect to the pedestals 2.

Y The wedge plates 6 and 7 haveo'pposed oblique frictionally engaging surfaces. The best arrangement of these opposed oblique surfaces is afforded by providing each hear- "ing plate with reversely inclined bearing load transmitted to the upper wedgeplate 7 through the equalizing bars 4, willtendv to maintain the said wedge plates6 and 7 in central or intermediate normal positions, shown in -'Fig. 2, with the oblique bearing surfaces"10 and 11 of both wedge plates in engagement. Obviously, when the truck wheels, journal box and lower wedge .plate 6 are moved toward. the right, in respect to Fig.2, the oblique surfaces 11 of the two wedg plates will be separated, and there will be a sliding contact between the oblique bearing surfaces 10; and on the other hand, that when the wheels, journal box and lower wedge plates 6 are mov ed toward the left in respect to Fig. 2,"the oblique surface 10 will be separated and the sliding friction will take" place between'the oblique surfaces 11 of the two wedge plates. 'As is evident, the greater the inclination of the bearing surfaces 10. and 11, the greater will be the force required to move the one wedge plate, in respectto the other, and the greater the tendency of the two wedge plates to assume normal intermediate positions under the weight ofthe load. The inclination of these surfaces may, therefore, be varied to meet the requirements of the particular service in which they are applied. y

In Figs. 5 and 6, I have shown substantantially the same wedge lates as illustrated in Figs. 1 to 4, inc usive, incorporated in, or directly associated 'with a combined lateral and radial motion device that is directly interposed between the truck side frame and the body bolster of a car. In this arrangement, the said uppef and lower wedge plates, which have the same opposed oblique bearing surfaces; as the bearing plates 6' and 7, are indicated, respectively, by the numerals 12- and 13. Of the parts of'th truck shown in said Figs. 5 and 6, the

the numeral 15 the journal boxes, the numeral 16, a transom rigidly connectingthe truck side frames, the numeral 17 the car body, the numeral 18 the car body bolster,

to the body bolster 18, and mounted for both pivotal and for vertical movements .in the Sliding casting 19. The said parts 14 and 20,' just noted, are shown as of a-construction disclosed and claimed in the John 0. Barber application, Serial Number 760,611, filed of date, April 12th, 1913, entitled Car trucks. The lower wedge plate 12 is seated onradial motion rollers 21, which, in turn, are mounted to travel on a lower bearing plate 22, shown as riveted in the web of the transom 16 and to flanges of the side frame 14. The rollers 21 rum on "grooves in the member-s12 and 22, so that the said lower wedge plate 12 will partake of the lateral movements of the truck frame. The truck springs 23 are interposed between the upper wedge plate 13 and the body bolster 18, and the said wedge plate 13, while free for vertical movements in respect to the said body bolster, is held for movements therewith, transversely of the. truck, this, as shown, being accomplishedvbynproviding the said wedge plate 13 with upturned end arms 24 (see Fig. 5'), that work in vertical (guides 25 secured on the side plates of the sai body bolster.

The expression wedge used in a broad sense .to inc ude the opposed or cooperating bearing members of t eral motion device and is not intended to limit these members to flat form nor to elements separate and distinct from other elements. i 7What I claim is:

vices comprising frictionally engaging upper and lower wedge plates arranged in cooperating pairs on opposite sides of the truck, each wedge plate having reversely inclinedfrictional surfaces, the. said lower wedge plates partaking of the lateral movements of the ournal boxes, and the upper wedge plates partakingv of the lateral movements of the truck body. a v

2. A lateral motion device for railway trucks, comprising 0 posed wedge plates, each having reverse y inclined fiictional surfaces intersecting at their intermediate portions, and all of which friction surfaces are normally in engagement. In a railway truck, lateral motion side 1. In a railway truck, lateral motion delates is herein e latbearings comprising cooperating upper and v lower wedge ,plates, each having reversely v inclinedintermediatelyintersecting friction surfaces, all of which inclined friction surmally in engagement. I

4. In a railway truck,- lateral motion side bearings comprising cooperating upper and lower wedge plates, each having reversely inclined intermediately intersecting friction faces of the two cotiperating plates are norres surfaces, all of which inclined friction'sur- In testimony whereof I-aflix my signature faces of the two cooperating plates are norin presence of two witnesses; mally in engagement, the said lower wedge HENRY H VAUGHAN plates partaking of the lateral movements of I 5 the journal boxes, and the said upper wedge Witnesses:

plates partaking of thelateral movements of a GORDON Gr.- CooKn, the truck body. I v WILLIAM J. O. HEWETsON. 

